Kid's Library of Space Exploration Deep-Space Probes, Book 9, (Paperback)

Beyond our planet, far away from the Earth's orbit, humans explore the stars using small spacecraft called space probes. These vehicles help scientists learn more about the vast universe around our small, blue planet.

Learn the history behind the deep-space probes that travel the galaxy. Read about the amazing discoveries these probes have made over the years. Find out how scientists have explored the farthest reaches of our solar system using deep-space probes.